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A team of retired former detectives with over 80 years service between them and three very distinct personalities is recruited to re-examine unsolved crimes. The squad is headed up by Sandra Pullman - a detective in disgrace after bungling a hostage situation. Adapting to the new touchy-feely 21st-century police strategies - not to mention working under a tough woman with her future on the line - isn't easy, as the three discover with plenty of comic results. From the discovery of a new motive in the killing of a college lecturer, to the tracing of a missing child, the team finds a way through the detail that eluded the original officers. But they are finding a surprising incidence of cover-up and conspiracy in their new investigations. Are their superiors about to close ranks? Or is someone feeding them particular files? Either way, the suspicion that they are being manipulated is high - and the team is determined to get to the bottom of it. These old dogs won't roll over too easily. Starring Amanda Redman, Dennis Waterman, Alun Armstrong and James Bolam.